metasploit-framework/lib/net/ssh/test/kex.rb

46 lines
1.5 KiB
Ruby

# -*- coding: binary -*-
require 'openssl'
require 'net/ssh/errors'
require 'net/ssh/transport/algorithms'
require 'net/ssh/transport/constants'
require 'net/ssh/transport/kex'
module Net; module SSH; module Test
# An implementation of a key-exchange strategy specifically for unit tests.
# (This strategy would never really work against a real SSH server--it makes
# too many assumptions about the server's response.)
#
# This registers itself with the transport key-exchange system as the
# "test" algorithm.
class Kex
include Net::SSH::Transport::Constants
# Creates a new instance of the testing key-exchange algorithm with the
# given arguments.
def initialize(algorithms, connection, data)
@connection = connection
end
# Exchange keys with the server. This returns a hash of constant values,
# and does not actually exchange keys.
def exchange_keys
result = Net::SSH::Buffer.from(:byte, NEWKEYS)
@connection.send_message(result)
buffer = @connection.next_message
raise Net::SSH::Exception, "expected NEWKEYS" unless buffer.type == NEWKEYS
{ :session_id => "abc-xyz",
:server_key => OpenSSL::PKey::RSA.new(32),
:shared_secret => OpenSSL::BN.new("1234567890", 10),
:hashing_algorithm => OpenSSL::Digest::SHA1 }
end
end
end; end; end
Net::SSH::Transport::Algorithms::ALGORITHMS[:kex] << "test"
Net::SSH::Transport::Kex::MAP["test"] = Net::SSH::Test::Kex